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February 22, 2023 at 9:44 amzz TTSubscriber
老师,您好,我在仿真官网上的光栅耦合器( https://support.lumerical.com/hc/en-us/articles/360042305334-Grating-coupler)时,仅在原案例上只是将两port换为TE模式,耦合效率只有0.01,之后不断扩大扫描范围,但耦合效率依旧很低。请问在设计TE模式的光栅耦合器时,除了需要将两Port换为TE模式,还有什么设置需要一同改变吗
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February 22, 2023 at 11:37 pmGuilin SunAnsys Employee
建议先用VarFDTD优化,然后再用3DFDTD设计,否则你现在扫描的范围可能离最佳结果很远。优化参数包括
光栅周期,占空比,耦合角度,光栅形状等。
网上例子都是经过反复仿真得到的较佳的结果。
Inverse Design of Grating Coupler (2D)
Broadband grating coupler (2D)
参见
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